Finding the Fourth Proportional to 636,942,258.76, 878,952,043.92 and 354,699,257.80
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Solution
The fourth proportional to 636,942,258.76, 878,952,043.92 and 354,699,257.80 is: 489,469,231.05
Step by Step Solution
- Step 1: Write the proportion equation
636,942,258.76 : 878,952,043.92 = 354,699,257.80 : x - Step 2: Convert to fraction form
636,942,258.76/878,952,043.92 = 354,699,257.80/x - Step 3: Cross multiply
636,942,258.76x = 878,952,043.92 × 354,699,257.80 - Step 4: Simplify right side
636,942,258.76x = 311,763,637,620,217,024 - Step 5: Solve for x
x = 311,763,637,620,217,024/636,942,258.76 - Step 6: Final answer
x = 489,469,231.05
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.